Design for a watch



FIG. 1 is a front elevational view of a watch showing my new design;

FIG. 2 is a top plan view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a bottom plan view thereof;

FIG. 6 is a rear elevational view thereof; and

FIG. 7 is a top plan view of another embodiment of my new design of FIGS. 1-6, all other views are identical thereto. 

The ornamental design for a watch, as shown and described. 